Phasia sumatrana Sun

Sun, Xuekui & Marshall, Stephen A., 2003, Systematics of Phasia Latreille (Diptera: Tachinidae), Zootaxa 276 (1), pp. 1-320: 200-201

publication ID 10.11646/zootaxa.276.1.1

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Phasia sumatrana Sun

sp. nov.

3.7.6 Phasia sumatrana Sun   , sp. nov.

(Figures I­62.1­5, II­3.2)


Holotype ♀, INDONESIA, Sumatra, Danau Toba, 800­1,200m, 24­25.xi.1973, H. Kurahashi (BLKU); paratype, 1♀, same as holotype (BLKU).


Body length: 3 mm.

FEMALE: HEAD. Head spherical or nearly so. Vertex 0.25 times as wide as head width; eyes separated by a distance wider than ocellar triangle. Fronto­orbital plate extremely narrow, black with grey pruinosity. Frontal vitta black or brown, broad, parallel. Frontal vitta at base of antennae 5­6 times as wide as fronto­orbital plate anteriorly. Ocellar setae present but fine; outer vertical setae present; inner vertical setae absent. Face black with grey pruinosity. Parafacial black with grey pruinosity, bare, 0.2 times as wide as first flagellomere. Lower margin of face projecting, visible in profile, brown, grey pruinose. Vibrissa well differentiated; intervibrissal distance 4.0­4.5 times distance between vibrissa and eye on same side; facial ridge with bristles on lower 1/5. Gena narrow brown to black with grey pruinosity; hairs black; height 0.1 times eye height. Lunule black and shining; sublunular bulla indistinct. Antenna black; first flagellomere 1.5 times as long as pedicel; arista thickened on basal 1/4. Length of oral opening 1.1 times its width. Occiput flattened, greyish yellow pruinose; hairs black. Palpus brown.

THORAX. Mesoscutum thinly pruinose, without black longitudinal vitta, with fine black hairs. 0+1(0) acrostichal seta; 1+2 dorsocentral setae; 2 postpronotal setae; presutural supra­alar seta present, strong; 1 postsutural intra­alar seta; 2 notopleural setae; 1­2 supra­alar setae; 2 postalar setae. Pleuron thinly grey pruinose; hairs black. Anepimeral setae medium size, black; 2­3 katepisternal setae; 4­5 meral setae. Scutellum black, shining, without pruinosity, with two pairs of marginal setae; apical setae present and distinct; discal setae randomly arranged, not in rows. Subscutellum not very prominent. WING. Lower calypter white with light brown infuscation. Wing base without scale­like setae. Tegula black. Basicosta brown. Wing hyaline, narrow; petiole of apical cell 0.45 times as long as preceding section of R 4+5; M meeting R 4+5 at acute angle. Halter yellow. LEGS. Fore femur brown; hairs black. Fore tibia brown, without bristles, apically with 1 p and 1 d. Fore tarus brown. Fore claws black; 0.9 times as long as fifth tarsomere. Pulvilli brown. Mid femur brown; hairs black. Mid tibia brown, with 1 v, apically with 1 av, 1 pv and 1 d. Hind femur brown; hairs black, with 4 long av. Hind tibia brown, with 4­5 ad and 1­2 pd. Anterior spine­like setae of hind tibia absent.

ABDOMEN. Abdominal tergites black, with yellow spot or area; pruinosity absent; longitudinal vitta absent; tergites I+II, II, III brown, tergites IV, V black. Relative length of abdominal tergites I+II:III:IV: V = 1.1:1:1:1; relative width I+II:III:IV: V = 0.35:1:1:0.7. Hair spots indistinct. Sternite VII (sheath) slightly longer than sternite VI; broad apically; bent, apex directed ventrally; sternite VII with linear wrinkles ventrally. Ovipositor bent upward.

MALE: Unknown.




Phasia sumatrana   is derived from the holotype locality, Sumatra, Indonesia.


Royal British Columbia Museum - Herbarium